Collins Robert F. Books

Reserve Officers Training Corps

By Collins Robert F.

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Basic training

By Collins Robert F.

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America at its best

By Collins Robert F.

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Discusses the history and role of the National Guard and describes the requirements, obligations, and duties of service in this organization.

Qualifying for admission to the service academies

By Collins Robert F.

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A guide to the five service academies including information about their history, facilities, entrance criteria, application procedures, academic program, degrees awarded, and the types of jobs avai...

How to Convert ISBN-10 to ISBN-13 (and Vice Versa): A Complete Guide

If you’re in the world of books—whether as a publisher, librarian, bookseller, or avid collector—you’ve likely come across the terms ISBN-10 and ISBN-13. Understanding these formats and knowing how to convert between them is essential for maintaining consistency and compatibility in book records. In this post, we’ll cover everything you need to know about ISBN conversions, step by step.

What is an EAN and How Does it Relate to an ISBN?

If you’ve ever purchased a product online or in a store, you’ve likely come across a barcode. Behind these barcodes lies a standardized system that makes modern commerce possible. Two key codes often encountered are the EAN (European Article Number) and ISBN (International Standard Book Number). But what are they, how are they connected, and why are they so crucial? Let’s explore.